At first I didn't understand what Howl's Moving Castle had to do with it, but after seeing the video I think Raven!Mytho would also make a fitting analogy. I'm not familiar with French animation (the only other French animated film I've heard of is The Triplets of Belleville, and that's because it was in the running for an Oscar the same year LotR won Best Picture >>;;) but the style of the animation does feel nostalgic to me.